How to delete hdfs folder from java app?

0 votes

I have a Java app and I want to delete a hdfs folder if it exists and this should be done before mapreduce. I tried the following but it didnt work. Any ideas?

url = "hdfs://hdfshost:port/the/folder/to/delete";
org.apache.hadoop.fs.FileUtil.fullyDelete(new File(url))
Oct 30, 2018 in Big Data Hadoop by slayer
• 29,170 points

recategorized Oct 30, 2018 by Omkar 313 views

1 answer to this question.

0 votes

Try this:

Configuration conf = new Configuration();
    conf.set("fs.hdfs.impl",org.apache.hadoop.hdfs.DistributedFileSystem.class.getName());
    conf.set("fs.file.impl",org.apache.hadoop.fs.LocalFileSystem.class.getName());
    FileSystem  hdfs = FileSystem.get(URI.create("hdfs://<namenode-hostname>:<port>"), conf);
    hdfs.delete("/path/to/your/file", isRecursive);
answered Oct 30, 2018 by Omkar
• 67,660 points

Related Questions In Big Data Hadoop

0 votes
1 answer

Hadoop HDFS: How to delete old files from HDFS?

You can use commands like this: hdfs dfs ...READ MORE

answered Nov 15, 2018 in Big Data Hadoop by Omkar
• 67,660 points
1,705 views
0 votes
1 answer

How to create a FileSystem object that can be used for reading from and writing to HDFS?

Read operation on HDFS In order to read ...READ MORE

answered Mar 21, 2018 in Big Data Hadoop by nitinrawat895
• 10,730 points

edited Mar 21, 2018 by nitinrawat895 364 views
0 votes
1 answer

How to transfer data from Netezza to HDFS using Apache Sqoop?

Remove the --direct option. It gives issue ...READ MORE

answered Apr 23, 2018 in Big Data Hadoop by kurt_cobain
• 9,260 points
337 views
0 votes
1 answer

How to extract only few lines of data from HDFS?

Here also in case of Hadoop, it is ...READ MORE

answered May 2, 2018 in Big Data Hadoop by nitinrawat895
• 10,730 points
1,486 views
0 votes
1 answer

Moving files in Hadoop using the Java API?

I would recommend you to use FileSystem.rename(). ...READ MORE

answered Apr 15, 2018 in Big Data Hadoop by Shubham
• 13,310 points
920 views
0 votes
1 answer

Hadoop giving java.io.IOException, in mkdir Java code.

I am not sure about the issue. ...READ MORE

answered May 3, 2018 in Big Data Hadoop by Shubham
• 13,310 points
482 views
0 votes
1 answer

Hadoop Mapreduce word count Program

Firstly you need to understand the concept ...READ MORE

answered Mar 16, 2018 in Data Analytics by nitinrawat895
• 10,730 points
3,357 views
0 votes
1 answer

hadoop.mapred vs hadoop.mapreduce?

org.apache.hadoop.mapred is the Old API  org.apache.hadoop.mapreduce is the ...READ MORE

answered Mar 16, 2018 in Data Analytics by nitinrawat895
• 10,730 points
402 views
0 votes
1 answer

How to delete a file from Hadoop hdfs using java?

Try this: FileSystem fs = FileSystem.get(getConf()); fs.delete(new ...READ MORE

answered Nov 28, 2018 in Big Data Hadoop by Omkar
• 67,660 points
676 views
0 votes
1 answer

Hadoop: How to copy directory from local system to hdfs using Java code?

Just use the FileSystem's copyFromLocalFile method. If the source Path ...READ MORE

answered Nov 14, 2018 in Big Data Hadoop by Omkar
• 67,660 points
816 views